T01
General capability
Process options include precision grinding, sinker EDM, wire EDM, hole EDM and turn-mill machining.
Grinding / EDM / Wire Cut
Precision machining for fine features and tight-fit assemblies
We provide on-demand custom CNC machining services, covering turning, milling, EDM, wire-cutting and other processes. We produce precision metal and plastic parts from prototype to mass production.
Extend CNC machining with grinding, EDM, wire cut and turn-mill process routes for hard materials, fine profiles and high-accuracy functional surfaces.
- 01Grinding support for tighter size control, flatness and smoother functional surfaces.
- 02EDM and wire cut routes for hard conductive materials, narrow slots and sharp internal corners.
- 03Turn-mill planning reduces repeated setups for complex rotational components.
Prototype to production
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Parts
Representative CNC machined parts we support
Zhonghanda reviews substrate, critical dimensions, appearance needs and finishing requirements together so material selection supports the final application.
01 / 04
Aluminum
130+
Machine capacity
24H
Engineering response
F.A.I.
First article inspection
99.2%
Quality acceptance
PRECISION / SERVICE
Secondary Precision Processes for Demanding Features
Precision machining combines grinding, EDM, wire cut and turn-mill process planning to solve features that conventional milling or turning cannot finish efficiently. Zhonghanda uses these routes for hardened materials, fine slots, sharp internal details, tight-fit surfaces, fixture components and repeat production parts that need stable dimensional control.
Secondary precision routes
Capability 01
CNC Grinding
Grinding support for tighter size control, flatness and smoother functional surfaces.
PRECISION / MACHINING
CNC machining tolerances and production notes
Use these capability notes as an engineering reference. Final tolerances depend on material, geometry, finishing and inspection requirements, but every project is reviewed for sample-to-production consistency before release.
Drawing requirements become measurable inspection criteria.
T02
Precision feature control
Typical parts include mold inserts, fixtures, shafts, sleeves, tooling details and precision assembly components.
T03
Material and finish notes
Material suitability depends on hardness, conductivity, geometry, finishing needs and inspection method.
T04
Inspection and reporting
Critical dimensions can be reviewed with first-article checks, in-process control and final inspection reporting.
PRECISION / MATERIALS
Engineering materials we commonly machine
We support common metals and plastics for prototypes, fixtures and production components. Final material selection can be confirmed during engineering review.
M01
Stainless Steel
M02
Alloy Steel
M03
Copper / Brass
M04
Titanium
M05
Aluminum
TYPICAL / PRECISION
Representative CNC machined parts we support
Representative component categories supported across machining, finishing and inspection workflows.
P01
Ground precision surfaces
Flat, cylindrical and fit-critical surfaces finished by grinding for tighter dimensional stability.
P02
EDM cavities
Deep cavities, sharp internal corners and hard conductive details produced with non-contact EDM routes.
P03
Wire-cut profiles
Accurate conductive material profiles, narrow slots and mold details cut by wire EDM.
P04
Tooling inserts
Mold inserts, fixture details and hardened tooling features that may combine milling, EDM and grinding.
P05
Fixtures and jigs
Custom production fixtures, positioning blocks and tooling parts for stable assembly workflows.
P06
Inspection-ready parts
Critical components prepared for first-article checks, in-process records and final inspection reporting.
PRECISION / INDUSTRY
Built for demanding engineering applications
Service capabilities are organized around real manufacturing needs across Zhonghanda's target industries.
Application 01
Fine-feature precision components
Application 02
Inspection fixtures, assembly tools and workholding parts
Application 03
Mold inserts, tooling details and hard-material features
Application 04
Precision assemblies requiring controlled fit
PRECISION / SURFACE
Surface treatment planned with machining
Finishing is coordinated around material, tolerance zones, appearance expectations and end-use environment.
Selected finish
Passivation
Cleaning and passivating stainless steel components to improve corrosion resistance without heavy coating build-up.
PROCESS
ZHD Precision Working Process
A controlled production workflow for Precision machining for fine features and tight-fit assemblies, from engineering review and task preparation to final inspection and delivery.
Stage 01
Production Task
Confirm the Precision machining for fine features and tight-fit assemblies requirements, review drawings, prepare inspection tools and arrange the required materials before production starts.
Stage 02
Master Sample
Create and verify a qualified master sample for Precision machining for fine features and tight-fit assemblies. Mass-produced parts are manufactured and inspected against the approved sample standard.
Stage 03
First Article
Technicians and operators verify the first article, then QC confirms dimensions, appearance and key requirements before batch production continues.
Stage 04
Self-inspection & Patrol Inspection
Operators and QC staff perform regular checks during Precision machining for fine features and tight-fit assemblies. Any issue is reported, isolated and handled promptly to keep the process stable.
Stage 05
Qualified Parts
Approved parts move into the warehouse or next process according to the production plan, with records kept for traceability.
Stage 06
Final Inspection
Only parts that pass final inspection, documentation review and packing confirmation are released for delivery.
PRECISION / QUALITY
Inspection support built into every service
Zhonghanda combines incoming checks, first-article inspection, in-process control, final inspection and outgoing verification to support stable custom machined parts.
Q01
IQC
Incoming material and component verification before production release.
Q02
IPQC
In-process checks for dimensions, appearance and risk control during production.
Q03
FQC / OQC
Final and outgoing inspection before packing and shipment, with video confirmation available when required.
WHY / CHOOSE
Built for buyers who need reliable production follow-through
We focus on manufacturability, stable lead times, sample-to-production consistency and clear communication from prototype through repeat production.
We focus on manufacturability, stable lead times, sample-to-production consistency and clear communication from prototype through repeat production.
Engineering feedback
Manufacturing review helps reduce risk before production starts.
130+ equipment capacity
A 24-hour production workflow supports samples, low-volume projects and repeat batches.
Finishing coordination
Surface treatment and appearance needs can be planned together with machining.
Precision machining for fine features and tight-fit assemblies Articles
Read recent technical articles related to this service before preparing your RFQ.
cnc
CNC for Complex Metal Housings: What Buyers Should Know
1. Why CNC matters for complex metal housings 2. What the part tells you about the manufacturing route 3. Key features buyers should evaluate 4. Why cast-and-machined aluminum is so common 5. Selection criteria that actually help 6. Practical buyer cautions 7. What to ask before you place an order 8. Next step
ZHONG HAN DAJul 01, 2026
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CNC Machining for Cast Aluminum Housings: What Buyers Should Check
1. Why CNC machining matters for cast aluminum housings 2. What this kind of part is designed to do 3. Why high-pressure die casting is often paired with CNC machining 4. Key features buyers should evaluate 5. Common mistakes when sourcing this type of housing 6. What to ask a supplier before ordering 7. How this connects to real buyer decisions 8. FAQ: quick buyer questions 9. Next step
ZHONG HAN DAJul 01, 2026
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CNC Machining for Complex Cast Housing Parts
1. Why CNC machining matters on a complex cast housing 2. What buyers should look for first 3. How the casting and machining stages work together 4. Common sourcing mistakes with machined cast housings 5. Practical selection advice for engineering and procurement teams 6. FAQ: a few questions buyers usually ask 7. What to do next
ZHONG HAN DAJul 01, 2026
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CNC Machining for Cast Industrial Housings: What Buyers Should Check
1. Why CNC matters on cast housings and functional bodies 2. What this type of part is trying to achieve 3. Quick buyer takeaway: what to check before you approve the part 4. Why cnc machining is the critical step 5. Design and sourcing criteria that matter most 6. Common mistakes buyers still make 7. Practical questions to ask a supplier 8. Next step
ZHONG HAN DAJul 01, 2026
What files should I send for a quote?
STEP or STP files are preferred, together with drawings, material, quantity, finish and tolerance requirements.
Can you support prototypes and production?
Yes. Zhonghanda uses 130+ machining centers and 24-hour production scheduling to support prototypes, small batches and repeat production depending on project requirements.
How do you help keep samples and production consistent?
Projects can include first-article inspection, in-process checks, final inspection and video confirmation so critical dimensions and finish expectations stay visible before shipment.
Ready to manufacture
Upload drawings and get engineering feedback
Send CAD files, material, quantity, tolerances and finish notes. Our team will review manufacturability, inspection points, lead-time risk and production follow-up before quoting.